?- EPM Group
- Fangda Carbon New Material Technology Co. Ltd
- GrafTech International
- Graphite india Limited
- HEG Limited
- Jilin Carbon Co. Ltd
- KAIFENG CARBON CO. LTD
- Nantong Yangzi Carbon Co. Ltd
- Nippon Carbon Co. Ltd
- SANGRAF International Inc.
- SEC CARBON LIMITED
- SHOWA DENKO K.K.
- Tokai Carbon Co. Ltd